From 26dd9766757895c04b33a89865e3886f18146332 Mon Sep 17 00:00:00 2001
From: Yousong Zhou <yszhou4tech@gmail.com>
Date: Sat, 24 Feb 2018 13:45:25 +0800
Subject: [PATCH] disas: fix compilation failure when isnan is a macro
---
disas/libvixl/vixl/utils.h | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/disas/libvixl/vixl/utils.h b/disas/libvixl/vixl/utils.h
index 5ab134e240..df30663df8 100644
--- a/disas/libvixl/vixl/utils.h
+++ b/disas/libvixl/vixl/utils.h
@@ -118,11 +118,17 @@ double double_pack(uint64_t sign, uint64_t exp, uint64_t mantissa);
// An fpclassify() function for 16-bit half-precision floats.
int float16classify(float16 value);
+#ifdef isnan
+#define isnan_ isnan
+#else
+#define isnan_ std::isnan
+#endif
+
// NaN tests.
inline bool IsSignallingNaN(double num) {
const uint64_t kFP64QuietNaNMask = UINT64_C(0x0008000000000000);
uint64_t raw = double_to_rawbits(num);
- if (std::isnan(num) && ((raw & kFP64QuietNaNMask) == 0)) {
+ if (isnan_(num) && ((raw & kFP64QuietNaNMask) == 0)) {
return true;
}
return false;
@@ -132,7 +138,7 @@ inline bool IsSignallingNaN(double num) {
inline bool IsSignallingNaN(float num) {
const uint32_t kFP32QuietNaNMask = 0x00400000;
uint32_t raw = float_to_rawbits(num);
- if (std::isnan(num) && ((raw & kFP32QuietNaNMask) == 0)) {
+ if (isnan_(num) && ((raw & kFP32QuietNaNMask) == 0)) {
return true;
}
return false;
@@ -148,21 +154,21 @@ inline bool IsSignallingNaN(float16 num) {
template <typename T>
inline bool IsQuietNaN(T num) {
- return std::isnan(num) && !IsSignallingNaN(num);
+ return isnan_(num) && !IsSignallingNaN(num);
}
// Convert the NaN in 'num' to a quiet NaN.
inline double ToQuietNaN(double num) {
const uint64_t kFP64QuietNaNMask = UINT64_C(0x0008000000000000);
- VIXL_ASSERT(std::isnan(num));
+ VIXL_ASSERT(isnan_(num));
return rawbits_to_double(double_to_rawbits(num) | kFP64QuietNaNMask);
}
inline float ToQuietNaN(float num) {
const uint32_t kFP32QuietNaNMask = 0x00400000;
- VIXL_ASSERT(std::isnan(num));
+ VIXL_ASSERT(isnan_(num));
return rawbits_to_float(float_to_rawbits(num) | kFP32QuietNaNMask);
}